We're replicating a PostgreSQL 8.4.x database using Slony1-1.2.x The origin database "data/base" directory is 197 GB in size. The slave database "data/base" directory is 562 GB in size and is over 75% filesystem utilization which has set off the "disk free" siren. My biggest table* measures 154 GB on the origin, and 533 GB on the slave. (*As reported by SELECT relname as "Table", pg_size_pretty(pg_total_relation_size(relid)) As "Size" from pg_catalog.pg_statio_user_tables ORDER BY pg_total_relation_size(relid) DESC; ) I took a peek at this table on the slave using pgadmin3. The table has auto-vacuum enabled, and TOAST autovacuum enabled. There are 8.6 million live tuples, and 1.5 million dead tuples. Last autovacuum was over a month ago. Last autoanalyze was 3 hours ago. Table size is 4 Gigs, and TOAST table size is 527 Gigs. Indexes size is 3 Gigs. Autovacuum threshold is 20%, and the table is just under that threshold. I ran vacuum analyze verbose. But the filesystem is still at 76% utilization. In fact, now, the "data/base" directory has grown to 565 GB. Why is my slave bigger than my master? How can I compact it, please? Best, Aleksey -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general